Ukrainian Drone Strike Takes Yandex's Largest Data Centre Offline in Ryazan Region
· TexaHub · Drones, Defence & Security, Geopolitics & Tech
A fire at Yandex's Sasovo facility on 8 October halted operations and disrupted cloud and third-party services across Russia. Reports describe it as the first confirmed strike on Russian data infrastructure since 2022, though Ukrainian officials had not formally confirmed it at publication.
What Happened at Sasovo
A data centre operated by Russian technology company Yandex caught fire in the Ryazan region on 8 October and was taken offline, Euronews reported. Yandex said the fire resulted from a Ukrainian drone attack and warned that some of its services could be unavailable [1].
The Moscow Times described the site, in the town of Sasovo, as the target of the first confirmed strike on Russian data infrastructure since the 2022 invasion, and said Yandex confirmed a full shutdown of operations while emergency crews dealt with the damage [2]. The Kyiv Independent, by contrast, wrote that Yandex acknowledged an "incident" without publicly linking it to a drone attack, and that neither Ukrainian military officials nor Russian regional authorities had confirmed the strike when it published [3].
Service Disruption
The outage tracker Downdetector recorded more than 1,300 user reports of problems with Yandex Cloud, Documents and Tables, while core consumer services such as search and taxi stayed online, according to the Moscow Times. Yandex shares fell more than 3.4% in morning trading on the Moscow Exchange [2].
The Kyiv Independent reported wider knock-on effects, including banking services going offline and websites of Russian Railways and RuTube becoming unreachable, and said Yandex Cloud reported power-supply problems in its "ru-central1-b" availability zone from 1:31 a.m. [3]. Meduza listed disruptions at Yandex Mail and Disk and at third parties including Avito, IVI, MegaFon, Russian Railways and T-Bank [4].
The Facility and Its Role
Yandex describes Yandex DC Sasovo as its largest data centre, according to the Kyiv Independent, which added that it stands on the grounds of the Sasta machine-tool plant, a supplier to Russia's defence sector that has been under UK sanctions since 2024 [3]. Meduza reported that the site housed two of Yandex's three supercomputers, Lyapunov and Chervonenkis, used to train neural networks [4].
Context and Limits of the Impact
The strike followed Russian attacks on at least eight major Ukrainian data centres since late September, which Moscow said processed military intelligence, the Moscow Times reported. The same overnight wave also hit the Gazprom Neftekhim Salavat complex in Bashkortostan and, according to the regional governor, the Omsk refinery, while Russia's Defence Ministry said it intercepted 399 Ukrainian drones [2]. Euronews noted that Ukraine claimed a strike on a major oil refinery that could not be independently verified [1].
Meduza quoted digital rights expert Sarkis Darbinyan as saying one regional data centre cannot disable major services, because companies distribute infrastructure and reroute traffic automatically, though attacks on regional providers could cause local disruption lasting hours to a day. A Ukrainian official was quoted as saying "Two can play that game" [4]. President Zelensky said Ukraine is capable of such action and "always respond[s] in kind" [3].
Sources
[1] Fire rages at Yandex data centre after Ukraine drone attack — Euronews, 8 Oct 2026
[2] Ukrainian Drones Hit Yandex Data Center, Industrial Facilities Across Russia — The Moscow Times, 8 Oct 2026
[3] Massive internet outage in Russia after Ukraine reportedly hits largest Yandex data center in drone attack — The Kyiv Independent, 8 Oct 2026
[4] Ukraine hit a data center operated by the Russian tech giant Yandex. How vulnerable is Russia's internet to further drone attacks? — Meduza, 8 Oct 2026